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Luoyang Rockewell Precision Bearing Co.,Ltd

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Bearings

Single Row Open Angular Contact Ball Bearing

Ball Bearing 719C/ACP4 Ball Bearing 718C/ACP4 Ball Bearing 70C/ACP4 Ball Bearing 72C/ACP4

Single Row Ball Bearing With Angular Contact Seal

H719-2RZC/P4 Double Seal Angular Contact Ball Bearing H718-2RZC/P4 Double Sealed Angular Contact Ball Bearings H70-2RZC/P4 Double Seal Angular Contact Ball Bearing H72-2RZC/P4 Double Sealed Angular Contact Ball Bearings 3NCHAR014CA-6/1BYZ P2 Ceramic Ball Spindle Bearing Double Seal

Screw bearing

BS Series Ball Screw Bearings BS Series High-precision Ball Screw Bearings with Double Seals TAC Series Ball Screw Bearings TAC High-precision Ball Screw Bearings with Double Seals 7602 Series Ball Screw Bearings 7602 High-precision Ball Screw Bearings With Double Seals 7603 Series Ball Screw Bearings 7603 Series Ball Screw Support Bearings With Double Seals FL760/P4 DBB Series Flange Type Spindle Bearings ZKLF Series Spindle Bearings Combined Bearings Series ZARN ZKLN Series Spindle Bearings

BNR/BAR/BTR/BER/BGR High-speed Thrust Angular Contact Ball Bearings

BGR10/19 Ultra-high Speed Ball bearing BER10/19 Ultra High Frequency Spindle Bearing BTR10/19 Main Shaft Thrust Bearing Ultra High Frequency BAR10/19 Ultra High Frequency Spindle Bearing BNR10/19 Main Shaft Thrust Bearing Ultra-high Frequency

Servo Motor Bearings

Servo Motor Bearing

Crossed Roller Bearings

Crossed Roller Bearings YRT Series Crossed Roller Bearings Series RA Crossed Roller Bearings Series RU RB Series Cross Roller Bearings

DLR Directly Lubricates Bearings

HCB719-CDLR-P4S Series HCB719-EDLR-P4S Series HC719-EDLR-P4S Series HCB70-CDLR-P4S Series HCB70-EDLR-P4S High-speed Spindle Bearings HC70-EDLR-P4S Series

High Speed Floating Displacement Bearing FD

FD1010-2RSD-T-P4S Series With Seal FD1010-DLR-T-P4S Series Direct Lubrication FD1010-T-P4S Series FD1010-K-T-P4S Series Tapered Bore

Cylindrical Roller Bearings

Tandem Radial Thrust Cylindrical Roller Bearing NNU49 Double Row Cylindrical Roller Bearings Series NNU49K Double Row Cylindrical Roller Bearings Series N10 Series Cylindrical Roller Bearings NN30K Series (Nylon/Brass Holder)

Tandem Thrust Cylindrical Roller Bearings

Tandem Thrust Cylindrical Roller Bearing

2344/2347 Double-way Thrust Angular Contact Ball Bearing

Three Column Thrust Angular Contact Ball Bearing With Flange 2344 Series Double Angular Contact Thrust Ball Bearings 2347 Series Double Angular Contact Thrust Ball Bearings

Flexible Bearing

Flexible Bearings

Thin Wall Bearings

Thin-walled Constant Cross-section Deep Groove Ball Bearings Sealed Thin-walled Bearing Type X Thin-walled Deep Groove Ball Bearing With Constant Section Seal Thin-walled Constant Cross-section Angular Contact Bearing Thin-walled Bearings With Four Contact Points And Constant Section Seal Thin-walled Metric Bearings PB Series Metric X-type Thin Wall Four Point Contact Ball Bearings Metric A-type Thin-wall Angular Contact Ball Bearings Metric C-type Thin Wall Deep Groove Ball Bearings

Double Row Angular Contact Ball Bearing

Double Row Angular Contact Bearing With Nylon Retainer Double Row Ball Bearings With Crowned Steel Cage Double Row Angular Contact Bearing With S-shaped Holder Double Row Angular Contact Bearing With U-shaped Holder Double Row Angular Contact Bearing With Brass Retainer Double Row Angular Contact Bearing With Two Inner Rings Thin-walled Bearing With Nylon Retainer (Series 38, 39, 30) LR50 Series Roller Bearing Rollers LR52 LR53 (series 3057, 3067, 3058, 3068) Double Row Angular Contact Roller Bearing For Guide Rollers

Double Row Deep Groove Ball Bearings

Double Row Deep Groove Ball Bearing With Nylon Retainer Double Row Deep Groove Ball Bearing With Crown Steel Retainer

Stainless Steel Angular Contact Ball Bearings

H719C-AC Ultra High Speed Bearing Stainless Steel 719C/AC Angular Contact Bearings Stainless Steel Angular Contact Bearing Standard Type 718C/AC H70C-AC Ultra High Speed Bearing Stainless Steel Angular Contact Bearing Standard Type 70C/AC Stainless Steel Angular Contact Bearing Standard Type 72C/AC BGR10/19 Ultra High Speed Spindle Bearings BTR10/19 Ultra High Speed Spindle Bearing BAR10/19 Ultra High Speed Spindle Bearings BER10/19 Ultra High Speed Spindle Bearings BNR10/19 Ultra High Speed Spindle Bearings H718-2RZC Double-sided Sealed Bearing H70-2RZC Double-sided Sealed Bearing H72-2RZC Double-sided Sealed Bearing H719-2RZC Series Ultra High Speed Sealed Stainless Steel Bearings

BAX Series Angular Contact Bearings

BAX Series Angular Contact Bearings

Inch Angular Contact Ball Bearings

LYLKWE Series Inch Angular Contact Ball Bearings
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Home / Thin Wall Bearings / Metric X-type Thin Wall Four Point Contact Ball Bearings

Metric X-type Thin Wall Four Point Contact Ball Bearings

Metric X-type Thin Wall Four Point Contact Ball Bearings,integrating crossed contact structure, metric precision manufacturing, and thin-wall enhancement technology, achieve a 35% increase in axial stiffness and 80% higher rotational speed while being 40% lighter, ideal for high-precision, lightweight applications in robotics, aerospace, and other advanced industries.

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Bearing Selection by Parameters

Inner (d)

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(D)

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TOP PRODUCT TYPES DENTAIL APPLICATION RELATED PRODUCTS

Metric X-type Thin Wall Four Point Contact Ball Bearings

	Type	Main dimensions			Rated load		Rated speed
					Dynamics	Static	Speed limit
Mail		d[mm]	D[mm]	B[mm]	C[kN]	C₀[kN]	[r/min]
	LKJBO25XPO	63	79	7	12620.0	5730.0	-
	LKJAO25XPO	63	76	6	9290.0	4050.0	-
	LKJBO25XPO 2RS	63	79	7	12620.0	5730.0	-
	LKJAO25XPO 2RS	63	76	6	9290.0	4050.0	-
	LKJBO20XPO	50	66	7	10400.0	5020.0	-
	LKJA020XPO	50	63	6	7600.0	3510.0	-
	LKJBO20XPO 2RS	50	66	7	10400.0	5020.0	-
	LKJA020XPO 2RS	50	63	6	7600.0	3510.0	-
	LKJHA15XPO	38	47	6	4450.0	2050.0	-
	LKJHA15XPO 2RS	38	47	6	4450.0	2050.0	-
	LKJHA10XPO	25	34	6	3250.0	1650.0	-
	LKJHA10XPO 2RS	25	34	6	3250.0	1650.0	-

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Dentail

Innovative X-Contact Geometry

Crossed four-point contact design (combined contact angles α=35°/55°) increases axial stiffness by 18% over conventional four-point bearings
Optimized stress distribution ensures maximum contact stress <1,800MPa under radial load P_r=8.5kN

Metric Precision Manufacturing

Full compliance with ISO 492:2018 metric standards (bore d=10-100mm, OD D=26-150mm)
Raceway roundness error ≤1.2μm, rotational accuracy meeting P4 class (GB/T 307.1)

Thin-wall Enhancement Technology

0.8-1.5mm ultra-thin rings (wall thickness/diameter ratio <0.03) treated with vacuum quenching + ion nitriding
Dynamic stiffness K_r=1,200N/μm at rotational speed n=12,000rpm

Application

The bearings can be used in the following industries

Industrial Robotics: SCARA robot wrist joints (repeatability ±0.02mm)
Aerospace: Satellite solar panel drives (15-year service life / 5×10^5 cycles)
Precision Metrology: CMM rotary tables (runout ≤3μm)
Medical: Da Vinci surgical robot arms (10^6 fatigue cycles under alternating loads)